| 摘要 |
PURPOSE: Disclosed is air hose for diving to smooth provision of oxygen in water, to overcome length limitation of existing oxygen hose by dividing inhalation and exhalation through two hose to provide air in water like shallow sea or river etc. CONSTITUTION: The air hose consists of U form of a character hose inlet to provide and discharge air; circular valve to smooth provision and discharge of oxygen; syringe to discharge water to the outside of lake in filling water of constant quantity; mouth to pass air to the mouth; safety valve to stop inflow of water in unusing state.
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